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- PMID: 30513911
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Article: Time-Resolved Spectroscopic Study of N,N-Di(4-bromo)nitrenium Ions in Selected Solutions
Title | Time-Resolved Spectroscopic Study of N,N-Di(4-bromo)nitrenium Ions in Selected Solutions |
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Authors | |
Keywords | nitrenium ion resonance Raman transient absorption reactive intermediate |
Issue Date | 2018 |
Publisher | Molecular Diversity Preservation International. The Journal's web site is located at http://www.mdpi.org/molecules |
Citation | Molecules, 2018, v. 23 n. 12, p. article no. 3182 How to Cite? |
Abstract | Nitrenium ions are important reactive intermediates in chemistry and biology. In this work, femtosecond and nanosecond transient absorption (fs-TA and ns-TA) along with nanosecond time-resolved resonance Raman (ns-TR3) experiments were employed to examine the photochemical pathways of N-(4,4-dibromodiphenylamino)-2,4,6-trimethylpyridinium BF4- (salt (DN) from just absorption of a photon of light to the production of the important N,N-di(4-bromophenyl)nitrenium ion 2. In acetonitrile (MeCN), the formation of halogenated diarylnitrenium ion 2 was observed within 4 ps, showing the vibrational spectra with strong intensity. The nucleophilic adduct reaction of ion 2 with H2O was also examined in aqueous solutions. The direct detection of the unique ortho adduct intermediate 3 shows that there is an efficient and exclusive reaction pathway for 2 with H2O. The results shown in this paper give new characterization of 2, which can be used to design time-resolved spectroscopy investigations of covalent addition reactions of nitrenium ions with other molecules in future studies. |
Persistent Identifier | http://hdl.handle.net/10722/273834 |
ISSN | 2023 Impact Factor: 4.2 2023 SCImago Journal Rankings: 0.744 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Du, L | - |
dc.contributor.author | Lan, X | - |
dc.contributor.author | Yan, Z | - |
dc.contributor.author | Zhu, R | - |
dc.contributor.author | Phillips, DL | - |
dc.date.accessioned | 2019-08-18T14:49:30Z | - |
dc.date.available | 2019-08-18T14:49:30Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Molecules, 2018, v. 23 n. 12, p. article no. 3182 | - |
dc.identifier.issn | 1420-3049 | - |
dc.identifier.uri | http://hdl.handle.net/10722/273834 | - |
dc.description.abstract | Nitrenium ions are important reactive intermediates in chemistry and biology. In this work, femtosecond and nanosecond transient absorption (fs-TA and ns-TA) along with nanosecond time-resolved resonance Raman (ns-TR3) experiments were employed to examine the photochemical pathways of N-(4,4-dibromodiphenylamino)-2,4,6-trimethylpyridinium BF4- (salt (DN) from just absorption of a photon of light to the production of the important N,N-di(4-bromophenyl)nitrenium ion 2. In acetonitrile (MeCN), the formation of halogenated diarylnitrenium ion 2 was observed within 4 ps, showing the vibrational spectra with strong intensity. The nucleophilic adduct reaction of ion 2 with H2O was also examined in aqueous solutions. The direct detection of the unique ortho adduct intermediate 3 shows that there is an efficient and exclusive reaction pathway for 2 with H2O. The results shown in this paper give new characterization of 2, which can be used to design time-resolved spectroscopy investigations of covalent addition reactions of nitrenium ions with other molecules in future studies. | - |
dc.language | eng | - |
dc.publisher | Molecular Diversity Preservation International. The Journal's web site is located at http://www.mdpi.org/molecules | - |
dc.relation.ispartof | Molecules | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | nitrenium ion | - |
dc.subject | resonance Raman | - |
dc.subject | transient absorption | - |
dc.subject | reactive intermediate | - |
dc.title | Time-Resolved Spectroscopic Study of N,N-Di(4-bromo)nitrenium Ions in Selected Solutions | - |
dc.type | Article | - |
dc.identifier.email | Du, L: ailleen@hku.hk | - |
dc.identifier.email | Phillips, DL: phillips@hku.hk | - |
dc.identifier.authority | Phillips, DL=rp00770 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.3390/molecules23123182 | - |
dc.identifier.pmid | 30513911 | - |
dc.identifier.scopus | eid_2-s2.0-85057587127 | - |
dc.identifier.hkuros | 300966 | - |
dc.identifier.volume | 23 | - |
dc.identifier.issue | 12 | - |
dc.identifier.spage | article no. 3182 | - |
dc.identifier.epage | article no. 3182 | - |
dc.identifier.isi | WOS:000454523000132 | - |
dc.publisher.place | Switzerland | - |
dc.identifier.issnl | 1420-3049 | - |